MLB's best pitches (Insider)

Zach Britton and Noah Syndergaard can both bring it with plus stuff, but which one of them can boast baseball's best pitch?How do you judge the quality of a pitch?

Not by velocity alone. Yankees right-hander Nathan Eovaldi owns the second-fastest fastball among starting pitchers this year, yet his fastball wouldn't make anyone's top-five list. And Royals starter Yordano Ventura has been struggling quite a lot for a guy with easy 95 mph cheese.

Not by movement alone, either. Rangers lefty Martin Perez has a sinker in the top five in horizontal movement, Mariners veteran Hisashi Iwakuma has a show-me curve he sometimes breaks out that has top-10 horizontal movement, and Joe Ross' changeup has…